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Do I Need a New GST Number After Buying a Business in Alberta?

Learn how GST applies when you buy a business in Alberta, when the section 167 election matters, and what to confirm about your GST account and filing.

Buying & Selling a Business5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 13, 2026
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Key takeaways
  • Whether you need a new GST number depends mainly on whether you bought assets or shares, and on whether you are already a GST registrant.
  • Without an election, a business asset sale can attract GST at 5% in Alberta on the taxable parts of the deal.
  • A joint election on form GST44 can remove GST on a qualifying business sale, but it is not available where the seller is a registrant and the buyer is not.

You have bought, or are about to buy, a business in Alberta. One of the first practical questions is whether the business keeps its existing GST number or whether you need your own. The answer is not the same for every deal.

How the purchase is structured matters, and so does whether you are already registered for GST. This article explains the rules that apply to GST on a business sale and the points to confirm with the Canada Revenue Agency (CRA), your accountant or a lawyer.

This article covers the law of Alberta.

Asset purchase or share purchase: why it matters

In an asset purchase, you buy the business property itself, such as equipment, inventory and goodwill. The seller stays the same legal person and you become the new owner of what you bought. In a share purchase, you buy the shares of the company that runs the business. The company stays the same legal entity, and only its owners change.

That difference matters for GST. After an asset purchase, you are a different person from the seller, so you need to look at your own GST position. After a share purchase, how GST registration is affected depends on the details of your deal, so it is worth confirming with an accountant.

Because the details depend on the structure of your deal and on your own registration status, confirm with the CRA or an accountant before you assume an existing number carries over or that you must open a new one.

How GST applies when you buy business assets

Without an election, each property and service in a business sale is treated as a separate supply, with a part of the price allocated to it. GST, at 5% in Alberta, can then apply to the taxable parts. Alberta has no provincial sales tax, so GST is the only sales tax on the deal.

There is a special rule for sales of a business or part of one. It applies where the buyer gets all or substantially all of the property that can reasonably be regarded as necessary to carry on that business. This is often called the going-concern rule, and it is found in section 167 of the Excise Tax Act.

The section 167 election and your registration status

The going-concern exemption works through a joint election by the seller and the buyer, made in the prescribed form with the prescribed information. If the election is valid, no tax is payable on the supplies under the agreement. The CRA form is GST44, titled GST/HST Election Concerning the Acquisition of a Business or Part of a Business.

Your registration status is central here. The election is not available where the seller is a registrant and the buyer is not a registrant.

SituationWhat the rules say
Seller is a registrant, buyer is notThe section 167 election is not available
Valid election by seller and buyerNo tax is payable on the supplies under the agreement
No electionEach item is a separate supply and GST at 5% can apply to taxable parts
Buyer is a registrantThe buyer must file the election with the Minister

Even with a valid election, tax can still be payable on a taxable service the seller will render, on a taxable lease, licence or similar supply of property, and, where the buyer is not a registrant, on a taxable sale of real property.

How the sale affects your filing

If you are a registrant buying under the election, you must file it with the Minister by the filing deadline for your first reporting period in which tax would otherwise have become payable on the supply. The Minister may accept a later date if you apply. Put the date in your calendar when the deal closes, and confirm the deadline with the CRA or your accountant.

There is also a rule for deaths. No tax is payable when an estate transfers a deceased person's business property to a beneficiary who is a registrant, if the property was used in the deceased's business immediately before death, the transfer follows the will or succession laws, the beneficiary takes it for commercial activities, and the estate and beneficiary jointly elect.

Reporting periods, return due dates and how a new account is opened are set by the CRA. Ask the CRA or your accountant to confirm them for your situation.

What to do next

Deal timing matters, so raise GST early, before closing, rather than after.

Frequently asked questions

Do I automatically get the seller's GST number when I buy assets?

Whether a seller's GST number carries over to you depends on the details of your deal, so your own registration status needs to be checked. Confirm with the CRA or an accountant what applies to your deal.

What if I buy the shares of an Alberta company?

In a share purchase the company remains the same legal entity, so the business is still carried on by the same company. Whether anything needs updating on its CRA account is worth confirming with an accountant.

Can I use the going-concern election if I am not registered for GST?

Not if the seller is a registrant. The section 167 election is not available where the supplier is a registrant and the recipient is not. Speak to an accountant or lawyer before closing.

Which form is used for the election?

The CRA form is GST44, GST/HST Election Concerning the Acquisition of a Business or Part of a Business. If the buyer is a registrant, it must file the election with the Minister.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Alberta laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a lawyer who practises in Alberta. Reach us at 1-844-900-1070 or send our Team a message.

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